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UPSC CAPF AC Paper - I
IMPORTANT
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Down's syndrome is characterized by

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Important Questions on Biology

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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 11 - Biology>Exercise 2>Q 81
Assertion (A) Sex chromatin body is an inactivation of one X-chromosome in diploid females.
Reason (R) Sex chromatin is simply called Barr body.
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 11 - Biology>Exercise 2>Q 83
A diseased man marries a normal woman and they get three daughters and five sons. All the daughters were diseased and sons were normal. The gene of this disease is
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 11 - Biology>Exercise 2>Q 84
A man and a woman, who do not show any apparent signs of a certain inherited disease, have seven children (2 daughters and 5 sons). Three of the sons suffer from the given disease but none of the daughters are affected. Which one of the following mode of inheritance do you suggest for this disease?
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 11 - Biology>Exercise 2>Q 85
Match List 1 (Genetic Disease) with List II (Causes)
     List I                                              List II
A. Duchene-muscular dystrophy   1. Autosomal recessive
B. Hypertrichosis                           2. Autosomal dominant
C. Tay-Sach's disease                   3. Y-linked inheritance
D. Nai-Patella syndrome                4. X-Linked inheritance
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 11 - Biology>Exercise 2>Q 86
Consider the following statements
1. Ribosomal RNA derived from nucleolar DNA.
2. Transfer RNA synthesized in nucleus on DNA template.
3. Messenger RNA convey genetic information from DNA of chromosomes to the ribosomes.
Which of the statements given above are correct about RNA?
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 11 - Biology>Exercise 2>Q 87
Which of the following features of DNA make if unequally suited to store and transmit genetic information from generation to generation?
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 11 - Biology>Exercise 2>Q 88
Assertion (A) Mendel worked on garden pea (Pisum sativum).
Reason (R) Garden pea belongs to family- Malvaceae.
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UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 11 - Biology>Exercise 2>Q 89

Assertion (A): ‘DNA Finger printing’ has become a powerful tool to establish paternity and identity of criminals in rape and assault cases.
Reason (R): Trace evidences such as hairs, saliva and dried semen are adequate for DNA analysis.
Codes :

A  B  C  D